Demountable rim for tires



o'ct. 25- 511922@ y G. B. AUSTIN DEMOUNTABLE RIM FOR TIRES Filed Oct. 29, 1923 2 Sheets-Sheet i. Vthe wheel, aswell as thereon.

Patented oct. 25, i927.

i Si l enen-GEB. AUSTIN, oFJUNGo, NEVADA;

DEMOUNTABLE RIM non TIRES.

Application filed October 29, 1923. SerialcNo. 671,294.

' This invention relates to a demount-ableV wheel rim for pneumatic tires, and its object isto provide means whereby either clinclier or straight side tires, with cable base beads, may be easily placed on the rim withoutdistorting them, or disturbing the ltube and liner'strip used to cover the gap between the tire beads. Another-'object ot the invention is to produce a tire'rim which may be disassembled for the placing of the tire, or for its removal, which will have only one bolt to hold the detachable parts in place.

' Another object ot the invention is to' provide a securing device for the detachable parts ot' the rim which can also be used for securing the rim against rotation when on for securing it in place inthe art that `while only one' form .ot' clincher rim and straight side rim is shown that there area number of rims having ditferent cross sections to which this invention may be applied..

Other objects otfthe invention will appear as the description proceeds. 1

An embodiment of the invention is shown inthe accompanying drawings ,in which the same reference numeral Vis applied to vthe same portion throughout,but"1 am aware'.

thatthere may be modifications thereof.

Fig.- 1 is a side elevation ot the rim as it appears unmounted, the tubular locking bolt being removed,

Fig.A 2 is a side elevation ot a'wheel having this rim applied thereto, the locking nuts being shown in place,

Fig. 3 is a sectional view ofthe wheel and rimon line 3 8, Fig. 2,

Fig. 4 is a sectional view of the wheel and rim on the line 4 4, Fig. 2,

Fig. 5 is a developed plan view of the two removable sections of the rim,

Fig. 6 is a. developed plan view ot the rim at the recess for the removable sections,

Fig. 7 is a sectional view of the wheel rim at the snap lock forholding the rim in place, until the bolts are tightened, y

Fig. 8 is a sectional view of one of the removable members ot the rim,

Fig. 9 is a sectional view of the part of the rim complementary to the part shown in Fig. 8,

` Fig. 10 is a view of aI portion of the wheel telloe and spokes of the wheel showing the recesses torfholding the rim lugs, and` Figure 11 1s a cross sectional View o'a rim with` the modiedform of: detachable y rim section shown in Figure 7. Figure V12 is atra'nsveise sectional viewvof a; modified torni otlockiiigdevlce used witha rim `secl tion similar to that ot' Figure 7, and Figure 13 isa side, elevation otfa portion of 4a tire rim with the locking devicepillustrated yin Figure 12. Y

The main body section of the rim is illustrated at 1 and may be' of any` desiredftype tires. Tlio'rim sectionfhas a recessedf'portion with aback` 2, adapted'to `receive and seat' the two'detachable sections 3 and 4;each detachable section- 3 and 4 has its inneredge and its outer end `beveled to A`interloclrwith the' niain'body section'l, when resting upon the back section 2,',the adjacent ends'of the `Vtwo members 3 and `4 beingbeveled to inter. 'loclr with eachother `as'rillustrated at" the The detachable i SU central part of Figu'rc'l. sections of the rim have lugs,as shown at 5 and 6 Vto aid iirinterloclzing theniwithv the main rim section 1, saidlugs litting into recesses 7 7 and 8 in the body section of the rim.

ltorholding ,either clincher or straightside Theback 2 has two raised tlangesp9f'and 10, I over which the Ydetachable sectioiisfmay'be moved intoplace and which aid in locking 'the detachable vsect-ions 3 and 4 in place when the tire is inflated.` f

'The rim section 1 has a lug 11 depending...r

theretroi'n vintov which is threadedy a `tubular bolt-12 for the purpose of'locking' the" two detachable members 3 and '4 in place,fay large washer 13 being used to hold the end of the member 3 against the end of the member-4. j

The ends 3, 4 are cut on a reverse bevel to overlap the adjacent flanged ends of the rim section 1.

The felloe bandis indicated at 14 and it is held von the telloe 15, partly because it is shrunk thereon as is usual with tires, and also by means of the tour bolts 16. These bolts have threaded washers 17 each with'a lug` 18 on one edge to form a seat for cer'- tain of -tlie rim holding lugs 19 Athrough which the bolts 416 pass. In order yto hold. the rim inplace when first placed on the tire, and to aid in locking it in place ythere lis a transverse recess iii the wheel felloe 15 ioo Cil

spring 21 to cause it to move into the opening of the tire rim as shown in Fig. 7.

The end 22 ofthe latch projects so it can be used to disengage the latch from the rim whenever necessary.

In order to prevent the rim from creeping it has four lugs 23, to 26, which project into corresponding'recesses of the felloe band, as indicated at 23', 24.

In the form of the invention shown in Fig. 11 the felloe isv indicated at 27, the felloe band at.28, the main body of the rim at 29,

and the detachable section at 30. This is operated exactly like the other rim but has straightasides instead of clincher beads.

i It will be vseen that the detachable members have their edges and ends so tapered as to fit into recesses in the body of the rim,

and since the base of the tire is inextensible,

possible to put the tire into place on the rim` i kwithoutdisturbing'the inner iap or tube Iin any way, and make it much easier to ap'- ply and remove a ,tire than where a transversel'y split rim is used.

In the form of the invention shown in Figs. 12 and 13, the fixed portion of the rim section is indicated at 35, and is provided,

-for a portion of its length, with a groove to receive a bead 36 on detachable member 37, while the same groove also receives the bead 3S of the detachable member 39. The detachable members 37, 39 have their inner Ledges beveled to lit into an oppositely beveled vgroove in the main body of the'rim, as indicated at 40, and the member 37 also overlaps the member 39 suiiiciently to holdit in place, and it is itself locked in place by means of a pivoted latch 41 which has a tongue 42 capable of passing into a hole in the' rib 36 at a. place where that rim bead 36 is slightly' the art that cable base tires are practically. inextensible `and iit the rimtightly so that when once the two members 37, 39 are pushed into place, the ribs 36, r38 will be pushed into 'the groove which receives them, with some little force, and as soon Vas the tire is expanded, those ribs will prevent the dislodgement of the two detachable members in `exactly the same way as the ribs 9 and 10 in the other form of the invention prevent the dislodgment of the two detachable members 3 vand 4. It is, of course, to be understood that in actual operation upon the wheel' of the vehicle the lugs 19 insure against accidental dislodging of the two detachable members.

lVhat I claim isy as follows, but modifications may be made in carrying out the invention shown in the drawings and in the above particularly describedform thereof, within the purview of the invention, as delined by the annexed claim:

A demountable riml for tires comprising a main body section having two removable sections on one side thereof, lugs on said removable lsections adapted to fit Vinto recesses in the main body section, and raised flanges on the openedge of said main body section over which said removable, sections are adaptedto be moved into place to aid in locking a tire in place when said tire is iniiated.

In testimony whereof I have hereunto set my hand this 13th day of October A. D. 1923.

Grenenl B. AUSTIN. 

